Designed to conform closely to National and State syllabi, this series on Mental Math's succeeds in taking students step by step through the various levels of the subject. Closely linked to classroom-based activity at each stage, it never loses sight of the fact that mathematics is ultimately a cognitive process. Starting with basic Addition, it progresses smoothly through Subtraction, Multiplication and Division, with well-positioned exercises that consolidate learning and provide motivation for moving on to higher stages. Algebra, geometry, calculus all become easier when students have truly mastered mental math's techniques. The salient features of the series are: teaches the basic skills needed for mental mathematics graded lessons and exercises promote conceptual clarity increases reasoning ability induces logical thinking inspires creative thinking within mathematical parameters lays a solid foundation for further progress saves time and effort in performing routine calculations students gain insights into all areas of mathematics curricula. This series is therefore a sine qua non for mastery of mental math's, which also has significant impact on other branches of mathematics.